Analytical Model of Open-Circuit Air Gap Flux Density in High Speed Permanent Magnet Machines Accounting for Winding Eddy Current Reaction

2020 ◽  
Author(s):  
Xin Xu ◽  
Zhiquan Deng ◽  
Zhongming Zhang ◽  
Zelin Wang
Keyword(s):  
Permanent Magnet ◽  
Flux Density ◽  
Analytical Model ◽  
Eddy Current ◽  
High Speed ◽  
Open Circuit ◽  
Air Gap ◽  
Permanent Magnet Machines

A novel analytical calculation of magnetic field in the slotted air gap of spoke-type permanent-magnet machines using conformal mapping

2020 ◽  
pp. 1-15
Author(s):  
Jianqi Li ◽  
Yu Zhou ◽  
Jianying Li
Keyword(s):  
Magnetic Field ◽  
Conformal Mapping ◽  
Permanent Magnet ◽  
Flux Density ◽  
Analytical Method ◽  
Electromotive Force ◽  
Analytical Calculation ◽  
Air Gap ◽  
Permanent Magnet Machines ◽  
Peak Value

This paper presented a novel analytical method for calculating magnetic field in the slotted air gap of spoke-type permanent-magnet machines using conformal mapping. Firstly, flux density without slots and complex relative air-gap permeance of slotted air gap are derived from conformal transformation separately. Secondly, they are combined in order to obtain normalized flux density taking account into the slots effect. The finite element (FE) results confirmed the validity of the analytical method for predicting magnetic field and back electromotive force (BEMF) in the slotted air gap of spoke-type permanent-magnet machines. In comparison with FE result, the analytical solution yields higher peak value of cogging torque.

The Effect of PWM on Rotor Eddy-Current Losses in High-Speed Permanent Magnet Machines

2015 ◽  
Vol 51 (11) ◽  
pp. 1-4 ◽  
Author(s):  
S. Jumayev ◽  
M. Merdzan ◽  
K. O. Boynov ◽  
J. J. H. Paulides ◽  
J. Pyrhonen ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Eddy Current ◽  
High Speed ◽  
Permanent Magnet Machines ◽  
Eddy Current Losses

Analytical Model of Eddy Current Loss in Windings of Permanent-Magnet Machines Accounting for Load

2012 ◽  
Vol 48 (7) ◽  
pp. 2138-2151 ◽  
Author(s):  
L. J. Wu ◽  
Z. Q. Zhu ◽  
D. Staton ◽  
M. Popescu ◽  
D. Hawkins
Keyword(s):  
Permanent Magnet ◽  
Analytical Model ◽  
Eddy Current ◽  
Eddy Current Loss ◽  
Permanent Magnet Machines ◽  
Current Loss
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